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Finding the Fourth Proportional to 8,478.73, 11,706.42 and 5,293.27

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Solution

The fourth proportional to 8,478.73, 11,706.42 and 5,293.27 is: 7,308.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.73 : 11,706.42 = 5,293.27 : x
  2. Step 2: Convert to fraction form
    8,478.73/11,706.42 = 5,293.27/x
  3. Step 3: Cross multiply
    8,478.73x = 11,706.42 × 5,293.27
  4. Step 4: Simplify right side
    8,478.73x = 61,965,241.79
  5. Step 5: Solve for x
    x = 61,965,241.79/8,478.73
  6. Step 6: Final answer
    x = 7,308.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.